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The Walls of Veins Are Thinner Than Those of Corresponding

Question 44

Multiple Choice

The walls of veins are thinner than those of corresponding arteries, because ________.


A) veins contain a lower proportion of smooth muscle fibers
B) of only arteries can perform vasoconstriction
C) veins contain a greater proportion of elastic fibers and collagen
D) blood pressure is higher in veins
E) the lumen of veins is much smaller than the lumen of arteries of similar diameter

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